Wynik wyszukiwania w bazie Polska Bibliografia Lekarska GBL

Zapytanie: OKSZTEL
Liczba odnalezionych rekordów: 2



Przejście do opcji zmiany formatu | Wyświetlenie wyników w wersji do druku
1/2

Tytuł oryginału: Effect of (S)-3,5-DHPG on learning, exploratory activity and anxiety in rats with experimental hypoxia.
Autorzy: Nadlewska Agnieszka, Car Halina, Oksztel Robert, Wiśniewski Konstanty
Źródło: Pol. J. Pharmacol. 2002: 54 (1) s.11-18, il., bibliogr. 38 poz.
Sygnatura GBL: 313,156

Hasła klasyfikacyjne GBL:
  • farmacja

    Typ dokumentu:
  • praca doświadczalna
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • zwierzęta
  • szczury

    Streszczenie angielskie: We investigated the effects of (S)-3,5-DHPG, a selective agonist of group I metabotropic glutamate receptors (I mGluRs), on certain behaviors in rats after short-term hypoxia as a model of experimentally induced amnesia. The effect of (S)-3,5-DHPG administered intracerebroventriculary (icv) at doses of 0.01, 0.1 and 1.0 nmol was assessed using behavioral tests: the open field test, the passive avoidance response and the elevated "plus" maze test. (S)-3,5-DHPG did not change the number of crossed fileds and rearings and only at a dose of 0.01 nmol it increased the number of bar approaches in the open field test. (S)-3,5-DHPG used at all doses improved consolidation, and at doses of 0.01 and 1.0 nmol it improved retrieval in the passive avoidance test. (S)-3,5-DHPG did not produce any significant effects in control rats in the elevated "plus" maze test. Hypoxia inhibited locomotor and exploratory activity of rats, significantly impaired consolidation and retrieval processes. We observed tendency to shortening the time spent in open arms and to decrease in the number of entries into open arms in the number of entries into open arms in the elevated "plus" maze in rats with undrewent hypoxia. In hypoxia-treated groups of rats, (S)-3,5-DHPG inhibited locomotor and exploratory activity in comparison with the control groups administered (S)-3,5-DHPG. Hypoxia significantly inhibited beneficial effects of (S)-3,5-DHPG on consolidation and retrieval in passive avoidance. (S)-3,5-DHPG only at the dose of 1.0 nmol used before hypoxia improved consolidation and at the dose of 0.01 nmolenhanced retieval in comparison with saline-treated group subjected to hypoxia...

    2/2

    Tytuł oryginału: Muscimol changes hypoxia-induced imapirment of behavior in rats.
    Autorzy: Oksztel Robert, Car Halina, Wiśniewski Konstanty
    Źródło: Pol. J. Pharmacol. 2002: 54 (5) s.423-431, il., tab., bibliogr. 48 poz.
    Sygnatura GBL: 313,156

    Hasła klasyfikacyjne GBL:
  • farmacja

    Typ dokumentu:
  • praca doświadczalna
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • zwierzęta
  • szczury
  • płeć żeńska

    Streszczenie angielskie: Muscimol, a seleactive agonist of GABA-A receptors, causes changes in behavioral activity. Hypoxia interferes with the GABAergic system and with the functions of GABA-A receptors. We used muscimol in Wistar rats to extimate its influence on locomotor activity in the open field test as well as on the processes of consolidation and retrieval, evaluated in the test of passive conditioned reflexes. Anxiolytic activity was examined in the elevated "plus" maze in physiological state and after hypoxia-induced amnesia. Following intraperitoneal administration of muscimol (1 mg/kg, ip), the animals showed a decrease in motility, in retrieval of skill reflexes and in a number of entries into open and closed arms in the elevated plus "maze". In animals exposed to hypoxia, we observed reduced motility in the open field, inhibition of retrieval and consolidation of passive conditioned reflexes, shortened time of sojourn in open arms and decreased number of entries into open and closed arms. In the goroup of animals which underwent hypoxia and then received muscimol, we observed no effect of hypoxia on muscimol activity in the open field test, except rearing when muscimol action was significantly reduced. Muscimol improved consolidation but not retrieval in comparison with the hypoxic saline-treated group of rats. In the elevated "plus" maze test, treatment of rats with muscimol after hypoxia significantly prolonged the time spent in open arms and increased the number of entries into open arms, while shortened the time spent in closed arms. In conclusion, muscimol in hypoxia-exposed group of rats exerted beneficial effect on consolidation in passive avoidance situation and exerted anxiolytic activity. Changes in the activity of muscimol under hypoxia may have significant clinical implications.

    stosując format: